Whaaatttttt?!!! How can going in circles of hours be boring? Jack Russell Terriers would rule the world if they had thumbs. A Jack Russell only has to show you once and after that he can depend on you to do it the right way every time. When he I put a harness on him, he bites the leash in his mouth and carries it for a ways. Yea you still have the other end, but in his mind HE is walking YOU.